266642441423 has 2 divisors, whose sum is σ = 266642441424. Its totient is φ = 266642441422.

The previous prime is 266642441419. The next prime is 266642441431. The reversal of 266642441423 is 324144246662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266642441423 - 2² = 266642441419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266642441123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133321220711 + 133321220712.

It is an arithmetic number, because the mean of its divisors is an integer number (133321220712).

Almost surely, 2^266642441423 is an apocalyptic number.

266642441423 is a deficient number, since it is larger than the sum of its proper divisors (1).

266642441423 is an equidigital number, since it uses as much as digits as its factorization.

266642441423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 44.

The spelling of 266642441423 in words is "two hundred sixty-six billion, six hundred forty-two million, four hundred forty-one thousand, four hundred twenty-three".